Features and benefits, 1: The large mesh surface and 12cm ultra silent bule LED fan make cooling efficiently. 2: Height--ajustable notebook stand with one cooling fan 120*120*25mm to bring your notebook screen to a ergomomic viewing height and distance improves the cooling efficiency of your notebook and protects your furniture from heat. 3: Protective rubber pads prevents your notebook from sliding and scratching. 4: Light weeght, flat and large mesh design. 5: USB powered fan: no mains power connetion needed.